Mont Cenis (Italian: Moncenisio) is a massif and pass (el. 2081 m / 6827 ft) in Savoie in France which forms the limit between the Cottian and Graian Alps.....The pass connects Lanslebourg-Mont-Cenis in France in the northwest with Susa in Italy in the southeast. It was used as part of the border between the two countries until the 1947 Treaty of Paris, but is now located completely in France.